Adjustable support.



A. TISCHER.

v ADIUSTABLE SUPPORT.

l/ APPLICATION FILED JUNE 25| i913.

1,155,383. fatend 001;. 5, 1915.

cuLUMBlA PLANGGRAPM CO..WASHINGTON. D. C.

yjAIIEXAIIDER"II'sCIIER, 'or oHIcAeo, ILLINOIS.

ADJUSTABLE SUPPORT.

l Specication'of Letters Patent.

Patented Oct. 5, 1915.

.Application ileilJune 25, 1913. Serial N o. 715,629. Y

Y 0 all whom t may concern.' I

Be it known that I, ALEXANDER yTIsoHnR,

a citizen of the United States, residing at Chicago, in the county ofv Cook and State of Illinois, have invented certain new and use-v ful Improvements iny Adjustable Supports,l

of which the following is a specication.

My invention relates to adjustable sup-A ports and has for its primary object the provision of an improved support of this character which shall have improved means for supporting objects of different sizes. j

With the above and other objectsin view this invention consists substantially in the combination, arrangement, and construction of parts all as hereinafter described, shown in the accompanyingdrawings which form a part of this specification and showthe preferred embodiment of myy invention, and more specically set forth in the subjoined claims. f f A In the drawings: Figure 1 is a top `plan view of a support constructed ,in accordance with the principles of myr invention and having portions oftwo of the legs thereof broken away. Fig. 2 is a bottomplan view of the device illustrated invFig., l with portions of the legs thereofbroken away. Fig. 3 is a section taken on the line 3 3 of Fig. 1 and looking in' the direction indicated by the arrows.

Reference numeral 10 indicates a guide plate through the center of which passes a bolt 11. A spreading plate 12 is `centrally pivoted upon the bolt 1l and secured by the bolt to the guide plate 10. The guide plate 10 is provided with a plurality of radial slots 13 and the spreading plate 12 is pro'- vided with a corresponding number of curved slots 11 all curving outwardly in the same direction from a point adjacent the center of the bolt to a point preferably adj acent the periphery thereof. Each slot in the plate 10 is at all times in register at one point with one of the slots in the plate 12, the points of register of the .various opposite pairs of slots being equidistant from the center of the plates.` A pair of lugs 15 formed upon the guide plate 10 `carry a handled worm gear 16, and a portion of the periphery of the spreading plate 12 is provided with gear teeth 17 in mesh with the worm gear 16. Bv rotation of the worm gear 16 the spreading plate 12 may be oscillated with respect to the guide plate 10 to cause the registering points of opposite pairs of slots to approach or recede from the center of the plates.V A plurality of legs 18, provided-'with downwardly extending feet 19 and strengthened in any suitable manner by such means as the braces 20, are slidably positioned upon the plate 10 and secured thereto by means of cap screws or other suitable clamping devices 21 at their inner ends,l the cap screws 21 serving, when screwed down tightly, to bind together ink fixed relationthe plates 10 and 12, and the legs 18. Each of the legs 18 is provided at its inner end with an oblong guide block 22 which is disposed in the radial slot 13 and serves to guide the leg backward or forwardin the slot andto prevent pivotal movement kof the leg about the cap screw 21 as a center. At its inner lend each of the legs 18 is provided with an upwardly eX- tending toothed clamping jaw 23, the teeth of the `clamping jaws projecting toward the f center of theguide plate 10.

In the use .of my invention anV object to be supported, such,` for instance, as a Christmas f tree, is positioned at the center of the guide plate 10. The cap screws 21 are then l'oosened to permit relative movement between theguide plates 10 and 12 and between them and the legs 18. By rotation of the worm wheel 16 the legs are thereupon forced into close engagement with the object to be sup ported, the teeth being of assistance in binding the object within the support. Following this the cap screws 21 are tightened.

It is a feature of my invention that the device is readily taken apart and may be .fitted into an extremely small packing space.

In the accompanying drawings and in the foregoing description i-s set forth the preferred embodiment of my invention, but it is obvious that one skilled in the art may make modifications thereof without departing from the spirit of the invention.

I claim:

1. The combination of a guide plate radially slotted, and adjusting plate pivoted at its center to the center of the guide plate and having radially curved slots crossing the slots of the guide plate, a plurality of clamping jaws upon the outer face of` the guide plate, elongated guide members formed upon the jaws, fitting the slots of the guide plate and slidable therein, binding members passingvthrough the slotsof bothplates and A* 4 Y y -z .[he-4 *combinationy ofa horizontal plate,

into the jaws, and means??foroscillfating tlie adjusting plate with respect to the guide plate. i I

2. The combination of aguide plate radially slotted,` an adjusting plate p iyoted at its center to the center of the guide plate and vhaving lradially curved slotsvcrossing theslotsof the guide'plate, a plurality of clamping jaws upon the outer-face of the guide plate, elongated guide members formed 'upon the jaws,"fitting the slots of the ,f ruideV plate and slidabl'eA therein, binding members passing through the slotsofboth Vplates A,and into the jaws', and means for oscillating'the adjusting plate with 'respect to they guide` plate, comprising worm"wlieel mountedv upon one of the plates, 'and teeth `formed upon the other plateand'inmesh withV theV worm wheel. f I 3. The combination of a guide plate .radially J-slotted, .an adjusting plate eentrally pivoted to the centerL of the guide plate 'and having. radially' curved slots crossing the slots ofthe guide plate, a plurality of clamping jaws Vupon the outer `face-of 'the guide plate, elongated guide memberslfor'med upon thejawsyitting the slots of theV guide plate and slidable therein, Cap screws passing through the slots 'of both plates and into the kjawsybearing lugs formed -upon the*A Vguide plate, av handled wormwheel-tangem tially mounted for rotation in the"lugs`,` and teeth upon they periphery of theadjusting plate meshing with the wormwhee j 4:. The combination of a horizontal plate, radially adjustable uprightvelampingjaws upon the plate, horizontal.y legs ormedupon the bottoms of the jaws and extending raoliA ally therefrom, and downwardly disposed feet upon the outer ends ofthe legs.

radially adjustable upright clamping jaws upon the plate, horiLzontallegs formed upon the'bottomsioi the vrj aws'i'a'n'd extendingA radiallytherefrom, and downwardly disposed Afeet upon the outer ends of the legs, said legs, andin'eansfory simultaneous 'radial adjustment ofthejawa apart of saidadjust-A ing means serving Vtofsecure the jaws to theJ plate. 8.l The combination of a plate, oppositely disposed pairs ofi'adially adjustable clampingv jaws upon' the rplate, radiating legs formed upon the" jaws, feet formed upon the legs, Uand means-for simultaneous radia'ladf, justment of the jaws, a part of 'saidadjusting means servingto seourethe jaws tothe plate, said jaws being'toothed upon their vadjacent-faces,V

In testimony' whereof I have signed rnyv name to this specification, in the presence of two subscribing witnesses, on lthis 21st day otvJunerAA.-D.'1913.` ,y

i ALEXANDER j Witnesses: l s ALEENAOFFUTT,

- Y KATHEnINn j; OYNEILL.

Copies of this patent may be obtained for five'cents each, by addressing lthe Commissioner of Patents. v 'f f wwashngtomn. f 

